document.write("«&nbsp;<a href='/news/view?id=39940'>Trapped modes in zigzag graphene nanoribbons. (arXiv:1701.05795v1 [math-ph])</a>");document.write(" | ");document.write("<a href='/news/view?id=39942'>Ulrich line bundles on Enriques surfaces with a polarization of degree four. (arXiv:1701.05759v1 [math.AG])</a>&nbsp;»");